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n <br />U <br />-12- Revised OCT 3 0 1981 <br />'~ DATA ANALYSIS <br />A data hale management and analysis system was developed on a CYSEE2 730 <br />Ca~uter to analyze vegetation data collected during this study. Data were <br />input via keypunched cards that had been dwble-punched and verified for <br />acasacy. Raw data print-outs were formatted like the original field data <br />sheets to facilitate additional data verification. <br />The procedures and fornarlae used to analyze vegetation ~pmduction, cover, <br />frequaicy, shrub height and Nasal area data are sumiarized in Wyanicg DDQ ._ <br />(;tiideline $2, 1979 edition. Data analysis results are presented by species <br />and life fore for each sampling point (e.q., mver quadrat) or transect and <br />- sumn3riz~ £or all sample points or transects within a~~ rticular vegetation <br />type. statistical methods used in the analysis such as calculation of means <br />and standard deviations aze standard, we11-docwoPnted terl~niques (SnedeNr <br />and Cochran, 1967). Analysis results were formatted in ~ ,7a. form to <br />facilitate access and interpretation. <br />• ~ The Shannon-Wev~er species diversity index may he used to oonpare wm¢uiity <br />oos~position data fmn a variety of sources. Differences in diversity may <br />be effected for cartmmities at different stages of succession, in different <br />habitats, or at different times of the year. Ebr example, diversity <br />indices calculated for vegetation data gathered at the beginning of or mid- <br />way ttuvugh the growing seaswi would likely be lower than those calculated <br />~~ at the end of the growing season. These differences would result primarily <br />fma the varying anthesis dates of vegetative species enm~mtered in the grass- <br />forb stxatum. A sample taken after the growing season world account for most <br />or all of the species that had bleared during that gra+ing <br />eazlier samples would likely miss those species having late .growing season <br />anthesis dates. Thus, the later in the season vegetative data supporting <br />diversity indices aze gathered, the mue accurate these indices will be in <br />reflecting the true vegetative specie; diversity. <br />The Shannon-weiner index is used to c-.amamicate anel oa~gsre species diver- <br />sity for the grassland a=d upland sagebrush on affected and control areas <br />._ at Nuc1a Mine. This index is based oa the Shamm~-Weiner function fran <br />the field of information theory (Margalef, 1967; blacArtlnur and MacArthur, <br />• <br />(Revised March 2006) Attachment 2.05.6(21-17 <br />